It is an interesting phenomenon.
The asymmetry in the treatment of Trump versus Biden seems to be attributable to the immature child in many of our fellow adults.
Whereas Trump was noisy, obnoxious and overtly threatening and contemptuous of tradition and the rule of law, Biden adopts a façade of respectability but is equally contemptuous of those who disagree with him and who stand in his way to impose the new legislative agenda he has adopted (not, I believe, out of principle, but out of naked ambition - how else to explain the inconsistencies with his past positions?); and though he is less threatening in an immanent way to the rule of law, he he is equally threatening of it in a deeply subversive way of our fundamental constitutional principles of free speech, equality before the law, separation of powers, respect for property rights, fiscal responsibility, etc. His proposed agenda proclaims proudly an intended makeover of these fundamental American institutions. And if successful this will cause enormous long term damage to our freedoms and our standard of living.
The puzzle to which I refer is why, while many understand the objections against him, they do not see them as fundamentally threatening as Trump's more demonstrative barking. In short, they are not afraid of Biden even while he promises to ruin the country. This lack of awareness is an immaturity similar to that of an adolescent who focusses on the pleasure gained from the things he buys and ignores the pain that will come from an inability to pay for them. When kids behave like this, if they are lucky, they have their parents to control them. When the adults behave like this, who do they have?
It would not be so bad were it not the case that their irresponsible behavior will hurt not only or primarily them but will hurt us all deeply and permanently.